[Ieatcamaros]

My brother's car ran for three months that way and then he bought the msd. But not because there was anything wrong, he just wanted to upgrade.

What kind of carburetor are you using? It may just need some adjustment.

As for the tach, I wouldn't even bother trying to hook it up. Unless you get a v8 tach it will read wrong anyway. Just save your money and get an aftermarket one. Then hook the signal wire (green on autometer tachs) to the negative coil.